These conformers have been used as building blocks for generating larger single stranded polymers, whose helical parameters we have calculated. We find that single stranded 'A' and 'B' form helices tend to be narrower and more tightly wound than the duplexes obtained in fibers 4,5. This is consistent with experimental observations on single stranded fibers of poly rC 6. We also find that the different sequences have different helix geometries.
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Chiral selection of single helix formed by diblock copolymers confined in nanopores
What was the last science book that made you laugh? That is, properly laugh, and not in a strained way as you might at a Shakespeare performance, or an otherwise dull lecture? The chances are that if you did laugh while reading a science book, it was because Steve Jones was involved. He knows the risks. Still, he knows he's funny. Take this: "Usually I never touch anything taken from a deep freeze as it reminds me too much of those lab freezers full as mine was the last time it was cleaned out of obscure little bottles labelled 'Elephant Serum? Or, on a more melancholy note, describing a time spent shivering in a thin sleeping bag: "The camp was in a desert in South Australia, and I was taking part in a futile search for the Hairy-Nosed Wombat, then thought to be on the verge of extinction we found just one, in a cage outside a pub. Incidentally, there is such an animal. Steve Jones - I was going to make a joke about his sharing a name with the ex-guitarist of the Sex Pistols, but he got there before me - has a legitimate business being funny here, because this book is a collection of pieces written over the last decade or more for the Daily Telegraph, in a regular column called "View from the Lab".
Continue to access RSC content when you are not at your institution. Follow our step-by-step guide. Chiral selection has attracted tremendous attention from the scientific communities, especially from biologists, due to the mysterious origin of homochirality in life. The self-assembly of achiral block copolymers confined in nanopores offers a simple but useful model of forming helical structures, where the helical structures possess random chirality selection, i. Based on this model, we study the stimulus-response of chiral selection to external conditions by introducing a designed chiral pattern onto the inner surface of a nanopore, aiming to obtain a defect-free helix with controllable homochirality.